Glamorgan Dragons skipper Jamie Dalrymple has won the toss and decided to bat first against the Somerset Sabres at the County Ground in Taunton.
With the Friends Provident t20 group stages coming towards an end both teams will want to maintain their chances of securing a place in the knock out stages.
Both teams come into the game having won their previous game and they will both want to keep the pressure on the teams above them in the South group.
Somerset Sabres team - ME Trescothick*, NRD Compton, JC Hildreth, Z de Bruyn, JC Buttler†, KA Pollard, AV Suppiah, BJ Phillips, AC Thomas, M Kartik, ML Turner.
Glamorgan Dragons team - J Allenby, MJ Cosgrove, JWM Dalrymple*, TL Maynard, GP Rees, DO Brown, MA Wallace†, RDB Croft, HT Waters, CP Ashling, WT Owen.